Deployment Guide

seq
Assign a sequence number to a deny or permit filter in an extended IP access list while creating the filter.
C9000 Series
Syntax
seq sequence-number {deny | permit} {ip-protocol-number | icmp | ip | tcp |
udp} {source mask | any | host ip-address} {destination mask | any | host
ip-address} [operator port [port]] [count [byte] | [dscp value] [order]
[fragments] [log [interval minutes] [threshold-in-msgs [count]] [monitor]
Parameters
sequence-
number
Enter a number from 0 to 4294967290.
deny Enter the keyword deny to configure a filter to drop packets meeting this
condition.
permit Enter the keyword permit to configure a filter to forward packets meeting this
criteria.
ip-protocol-
number
Enter a number from 0 to 255 to filter based on the protocol identified in the IP
protocol header.
icmp Enter the keyword icmp to configure an ICMP access list filter.
ip Enter the keyword ip to configure a generic IP access list. The keyword ip
specifies that the access list permits all IP protocols.
tcp Enter the keyword tcp to configure a TCP access list filter.
udp Enter the keyword udp to configure a UDP access list filter.
source Enter an IP address in dotted decimal format of the network from which the packet
was received.
mask (OPTIONAL) Enter a network mask in /prefix format (/x) or A.B.C.D. The mask,
when specified in A.B.C.D format, may be either contiguous or non-contiguous.
any Enter the keyword any to specify that all routes are subject to the filter.
host ip-address Enter the keyword host and then enter the IP address to specify a host IP address
or hostname.
operator (OPTIONAL) Enter one of the following logical operands:
● eq = equal to
● neq = not equal to
● gt = greater than
● lt = less than
● range = inclusive range of ports (you must specify two ports for the port
parameter.)
port port (OPTIONAL) Enter the application layer port number. Enter two port numbers if
you are using the range logical operand. The range is from 0 to 65535.
The following list includes some common TCP port numbers:
● 23 = Telnet
● 20 and 21 = FTP
● 25 = SMTP
● 169 = SNMP
destination Enter the IP address of the network or host to which the packets are sent.
message-type (OPTIONAL) Enter an ICMP message type, either with the type (and code, if
necessary) numbers or with the name of the message type. The range is from 0 to
255 for ICMP type and from 0 to 255 for ICMP code.
count (OPTIONAL) Enter the keyword count to count packets the filter processes.
252 Access Control Lists (ACL)